ICD-10 Code for Delirium
Also indexed as (acute or subacute) (not alcohol- or drug-induced)
The ICD-10-CM code for delirium is R41.0 — Disorientation, unspecified. This is the code the Alphabetic Index gives for delirium with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
BillableUnspecified
R41.0 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which delirium code should you use?
The Alphabetic Index lists 33 codes under Delirium, delirious. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| alcoholic | F10.921 | Alcohol use, unspecified with intoxication delirium | |
| exhaustion | F43.0 | Acute stress reaction | |
| hysterical | F44.89 | Other dissociative and conversion disorders | |
| postprocedural | F05 | Delirium due to known physiological condition | |
| puerperal | F05 | Delirium due to known physiological condition | |
| tremens | F10.231 | Alcohol dependence with withdrawal delirium |
Delirium with
| dementia | F05 | Delirium due to known physiological condition |
Delirium alcoholic
Delirium due to
| amphetamine intoxication | F15.921 | Other stimulant use, unspecified with intoxication delirium | |
| cannabis intoxication | F12.921 | Cannabis use, unspecified with intoxication delirium | |
| cocaine intoxication | F14.921 | Cocaine use, unspecified with intoxication delirium | |
| general medical condition | F05 | Delirium due to known physiological condition | |
| hallucinogen intoxication | F16.921 | Hallucinogen use, unspecified with intoxication with delirium | |
| inhalant intoxication | F18.921 | Inhalant use, unspecified with intoxication with delirium | |
| multiple etiologies | F05 | Delirium due to known physiological condition | |
| opioid intoxication | F11.921 | Opioid use, unspecified with intoxication delirium | |
| othersubstance | F19.921 | Other psychoactive substance use, unspecified with intoxication with delirium | |
| phencyclidine intoxication | F16.921 | Hallucinogen use, unspecified with intoxication with delirium | |
| psychoactive substance NEC intoxication | F19.921 | Other psychoactive substance use, unspecified with intoxication with delirium | |
| unknown etiology | R41.0 | Disorientation, unspecified | |
| alcohol › intoxication | F10.921 | Alcohol use, unspecified with intoxication delirium | |
| alcohol › withdrawal | F10.231 | Alcohol dependence with withdrawal delirium | |
| anxiolytic › intoxication | F13.921 | Sedative, hypnotic or anxiolytic use, unspecified with intoxication delirium | |
| anxiolytic › withdrawal | F13.231 | Sedative, hypnotic or anxiolytic dependence with withdrawal delirium | |
| hypnotic › intoxication | F13.921 | Sedative, hypnotic or anxiolytic use, unspecified with intoxication delirium | |
| hypnotic › withdrawal | F13.231 | Sedative, hypnotic or anxiolytic dependence with withdrawal delirium | |
| sedative › intoxication | F13.921 | Sedative, hypnotic or anxiolytic use, unspecified with intoxication delirium | |
| sedative › withdrawal | F13.231 | Sedative, hypnotic or anxiolytic dependence with withdrawal delirium | |
| amphetamine intoxication › in › abuse | F15.121 | Other stimulant abuse with intoxication delirium | |
| amphetamine intoxication › in › dependence | F15.221 | Other stimulant dependence with intoxication delirium | |
| cannabis intoxication › in › abuse | F12.121 | Cannabis abuse with intoxication delirium | |
| cannabis intoxication › in › dependence | F12.221 | Cannabis dependence with intoxication delirium | |
| cocaine intoxication › in › abuse | F14.121 | Cocaine abuse with intoxication with delirium | |
| cocaine intoxication › in › dependence | F14.221 | Cocaine dependence with intoxication delirium | |
| hallucinogen intoxication › in › abuse | F16.121 | Hallucinogen abuse with intoxication with delirium | |
| hallucinogen intoxication › in › dependence | F16.221 | Hallucinogen dependence with intoxication with delirium | |
| inhalant intoxication › in › abuse | F18.121 | Inhalant abuse with intoxication delirium | |
| inhalant intoxication › in › dependence | F18.221 | Inhalant dependence with intoxication delirium | |
| opioid intoxication › in › abuse | F11.121 | Opioid abuse with intoxication delirium | |
| opioid intoxication › in › dependence | F11.221 | Opioid dependence with intoxication delirium | |
| phencyclidine intoxication › in › abuse | F16.121 | Hallucinogen abuse with intoxication with delirium | |
| phencyclidine intoxication › in › dependence | F16.221 | Hallucinogen dependence with intoxication with delirium | |
| psychoactive substance NEC intoxication › in › abuse | F19.121 | Other psychoactive substance abuse with intoxication delirium | |
| psychoactive substance NEC intoxication › in › dependence | F19.221 | Other psychoactive substance dependence with intoxication delirium | |
| alcohol › intoxication › in › abuse | F10.121 | Alcohol abuse with intoxication delirium | |
| alcohol › intoxication › in › dependence | F10.221 | Alcohol dependence with intoxication delirium | |
| anxiolytic › intoxication › in › abuse | F13.121 | Sedative, hypnotic or anxiolytic abuse with intoxication delirium | |
| anxiolytic › intoxication › in › dependence | F13.221 | Sedative, hypnotic or anxiolytic dependence with intoxication delirium | |
| hypnotic › intoxication › in › abuse | F13.121 | Sedative, hypnotic or anxiolytic abuse with intoxication delirium | |
| hypnotic › intoxication › in › dependence | F13.221 | Sedative, hypnotic or anxiolytic dependence with intoxication delirium | |
| sedative › intoxication › in › abuse | F13.121 | Sedative, hypnotic or anxiolytic abuse with intoxication delirium | |
| sedative › intoxication › in › dependence | F13.221 | Sedative, hypnotic or anxiolytic dependence with intoxication delirium |
Delirium tremens
| sedative-induced | F13.231 | Sedative, hypnotic or anxiolytic dependence with withdrawal delirium |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources